Balanodons are shelled creatures indigenous to Balan. They are found within the planet's lakes, but have an ability to levitate due to unknown propulsion. They also have an ability to survive the vacuum of space. Balanodons apparently have a version of a hive mind, in which the organisms react to threats to their society as a whole, or as one organism.

Gamilas General Goer uses balanodons in an attack against the Earth battleship Yamato, remotely controlling the creatures from a fighter craft to coalesce them into a large monstrous form. After shock cannon impacts fail to destroy the balanodons, Yamato eliminates them with its wave motion gun ("Charge! Balanosaurus Special Attack Group!").